package com.blak.black.controller;

import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import com.blak.black.common.R;
import com.blak.black.dto.SetmealDto;
import com.blak.black.entity.Category;
import com.blak.black.entity.Dish;
import com.blak.black.entity.Setmeal;
import com.blak.black.service.CategoryService;
import com.blak.black.service.DishService;
import com.blak.black.service.SetmealDishService;
import com.blak.black.service.SetmealService;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.cache.annotation.CacheEvict;
import org.springframework.cache.annotation.Cacheable;
import org.springframework.web.bind.annotation.*;

import javax.servlet.http.HttpServletRequest;
import java.util.List;
import java.util.stream.Collectors;

@RestController
@RequestMapping("/setmeal")
@Slf4j

public class SetmealController {
    @Autowired
    private SetmealService setmealService;
    @Autowired
    private SetmealDishService setmealDishService;
    @Autowired
    private CategoryService categoryService;

    @PostMapping
    //清除setmealCache名称下，所有的缓存数据
    @CacheEvict(value = "setmealCache",allEntries = true)
    public R<String> save(@RequestBody SetmealDto setmealDto) {
        log.info("套餐信息：{}", setmealDto);

        setmealService.saveWithDish(setmealDto);

        return R.success("新增成功");
    }

    @GetMapping("/page")
    public R<Page> page(int page, int pageSize, String name) {
        //分页构造器对象
        Page<Setmeal> pageInfo = new Page<>(page, pageSize);
        Page<SetmealDto> dtoPage = new Page<>();
        LambdaQueryWrapper<Setmeal> queryWrapper = new LambdaQueryWrapper<>();

        //添加查询条件,根据name进行like模糊查询
        queryWrapper.like(name != null, Setmeal::getName, name);

        //添加排序条件，根据更新时间降序排列
        queryWrapper.orderByDesc(Setmeal::getUpdateTime);

        setmealService.page(pageInfo,queryWrapper);

        //对象拷贝
        BeanUtils.copyProperties(pageInfo,dtoPage,"records");
        List<Setmeal> records = pageInfo.getRecords();

        List<SetmealDto> list = records.stream().map((item) -> {
            SetmealDto setmealDto = new SetmealDto();
            //对象拷贝
            BeanUtils.copyProperties(item, setmealDto);
            //分类id
            Long categoryId = item.getCategoryId();
            //根据分类id查询分类对象
            Category category = categoryService.getById(categoryId);
            if (category != null) {
                //分类名称
                String categoryName = category.getName();
                setmealDto.setCategoryName(categoryName);
            }
            return setmealDto;

        }).collect(Collectors.toList());

        dtoPage.setRecords(list);

        return R.success(dtoPage);
    }

    /**
     * 根据条件查询套餐数据
     * @param setmeal
     * @return
     */
    @GetMapping("/list")
    //在方法执行前spring先查看缓存中是否有数据，如果有数据，则直接返回缓存数据；若没有数据，调用方法并将方法返回值放到缓存中
    //  cacheName/value:用来指定缓存组件的名字
    //  key: 缓存数据时使用的key
    @Cacheable(value = "setmealCache",key = "#setmeal.categoryId + '_' + #setmeal.status")
    public R<List<Setmeal>> list(Setmeal setmeal){
        LambdaQueryWrapper<Setmeal> queryWrapper = new LambdaQueryWrapper<>();
        queryWrapper.eq(setmeal.getCategoryId()!=null,Setmeal::getCategoryId,setmeal.getCategoryId());
        queryWrapper.eq(setmeal.getStatus()!=null,Setmeal::getStatus,setmeal.getStatus());
        queryWrapper.orderByDesc(Setmeal::getUpdateTime);

        List<Setmeal> list = setmealService.list(queryWrapper);
        return R.success(list);

    }

    /**
     * 删除套餐，同时删除套餐和菜品的关联数据
     * @param ids
     * @return
     */
    @DeleteMapping
    //清除setmealCache名称下，所有的缓存数据
    //  allEntries：将value名称下缓存的所有数据都删除
    @CacheEvict(value = "setmealCache",allEntries = true)
    public R<String> delete(@RequestParam List<Long> ids){
        log.info("ids:{}",ids);
        setmealService.removeWithDish(ids);
        return R.success("删除成功");
    }

    /**
     * 停售套餐
     * @param ids
     * @return
     */
    @PostMapping("/status/0")
    public R<String> status0(@RequestParam List<Long> ids){
        log.info("ids:{}",ids);
        for(long id:ids){
            Setmeal setmeal = setmealService.getById(id);
            setmeal.setStatus(0);
            setmealService.updateById(setmeal);
        }
        return R.success("成功");
    }

    /**
     *
     * @param ids
     * @return
     */
    @PostMapping("/status/1")
    public R<String> status1(@RequestParam List<Long> ids){
        log.info("ids:{}",ids);
        for(long id:ids){
            Setmeal setmeal = setmealService.getById(id);
            setmeal.setStatus(1);
            setmealService.updateById(setmeal);
        }
        return R.success("成功");
    }

}
